[Qemu-devel] [PATCH v7 0/4] Clean unused entries in the qcow2 L2/refcount cache

[Alberto Garcia <berto@igalia.com>]

v7:
- Rebase against the current master.
- Update version number in the 'since' field of the
  'cache-clean-interval' option.

v6: https://lists.gnu.org/archive/html/qemu-devel/2015-06/msg01929.html
- Update documentation to clarify what "unused entries" mean.

v5: https://lists.gnu.org/archive/html/qemu-devel/2015-06/msg00573.html
- Fix build in mingw.
- Use getpagesize() instead of sysconf(_SC_PAGESIZE).
- Clarify that 0 is the default value for 'cache-clean-interval', and that
  it disables the feature.
- Add the patch that documents how to configure the cache to this
  series, expanded with the explanation of 'cache-clean-interval'.
  (previous version: 
https://lists.gnu.org/archive/html/qemu-devel/2015-05/msg02253.html)

v4: https://lists.gnu.org/archive/html/qemu-devel/2015-05/msg06120.html
- Revert the 'cache-clean-interval' change. This should probably go
  into a new BlockDeviceInfoSpecific struct (along with other
  settings), but is out of the scope for this series.

v3: https://lists.gnu.org/archive/html/qemu-devel/2015-05/msg05473.html
- Add 'cache-clean-interval' field to ImageInfoSpecificQCow2.

v2: https://lists.gnu.org/archive/html/qemu-devel/2015-05/msg05316.html
- Clarify that the block-commit mentioned in the first patch refers to
  the HMP commit command.
- Check the value of cache_clean_interval and cast it accordingly to
  prevent it from overflowing.

v1: https://lists.gnu.org/archive/html/qemu-devel/2015-05/msg03510.html

Alberto Garcia (4):
  qcow2: mark the memory as no longer needed after qcow2_cache_empty()
  qcow2: add option to clean unused cache entries after some time
  docs: document how to configure the qcow2 L2/refcount caches
  qcow2: reorder fields in Qcow2CachedTable to reduce padding

 block/qcow2-cache.c  |  63 +++++++++++++++++++-
 block/qcow2.c        |  64 ++++++++++++++++++++
 block/qcow2.h        |   4 ++
 docs/qcow2-cache.txt | 164 +++++++++++++++++++++++++++++++++++++++++++++++++++
 qapi/block-core.json |   7 ++-
 5 files changed, 300 insertions(+), 2 deletions(-)
 create mode 100644 docs/qcow2-cache.txt

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2.4.6